Improved furnace construction



Patented Jan. 1, 1935 PATENT OFFICE IMPROVED FURNACE CONSTRUCTION Edward J. Schimke, Chicago, Ill., assignor to Enterprise Boiler and Tank Works, Inc., Chicago, Ill., a corporation of Illinois Application August 21, 1933, Serial No. 686,022

3 Claims.

This invention relatesto a furnace and concerns itself with a structure whereby the heat passing from the furnace with the smoke and gases is utilized for heating the coldair escaping from the dwelling room together with means for forcing this heated air into the hot air chamber or conduit that conveys the same to the rooms to be heated.

The invention comprises the novel structure and combination of parts hereinafter described and more particularly pointed out and defined in the appended claims. In the accompanying drawing which illustrates a preferred form of this'invention and in which similar reference numerals refer to similar features in the different views 5' Figure 1 is a top plan view of a furnace involving this invention.

Figure 2 is an enlarged sectional view of the same taken upon the line II-II of Figure 1 looking in the direction of the arrows.

Figure 3 is an enlarged sectional view taken upon the line III-III of Figure 2 looking in the direction of the arrows with parts omitted.

In accordance with this invention, there is illustrated a furnace 1 in which coal or oil or any suitable fuel may be burned. The furnace is surrounded by a casing 2 comprising a front wall 2a, a top wall 21), side walls 2c, and a base 2d. The rear wall 2e of the casing terminates at its lower portion in an offset box-like structure 3 that is joined to the base 2d.

A fan or suitable blower 4 is located in the boxlike offset 3 and communicates with a passage 5 formed between the base 2d of the casing and a plate 6 which is attached to the lower end of a partition 7 which extends from the top of casing and divides the casing into two compartments or chambers in the front one of which the furmice 1 is located.

In thetop of the furnace compartment, there is a conduit or pipe 8 designed to convey the hot air to a register or the like in a dwelling room. In the top of the other compartment, there is a pipe or conduit 9 that is adapted to convey the cold air from the dwelling room within such compartment.

A radiator 10 in the form of an enclosed metal casing is supported within the rear chamber of the casing 2 and the exhaust pipe 11 from the furnace extends through the partition 7 and is attached to the upper portion of this radiator which is provided with an inlet opening 12 communicating with said pipe 12 for receiving the smoke and gases from the furnace. Directly opposite the opening 12 in the radiator 10, there is an outlet opening 13 which communicates with an exhaust pipe or chimney 14 attached to the radiator and extending through the rear wall 2e 0f the casing 2. It will of course be understood that the partition 7 and the rear wall 2e have a substantially air tight fit with the pipes 11 and 14. It will be noted that the radiator 10 is spaced from the walls of the casing 2 and from the partition 7, and is closed with the exception of the inlet opening 12 and the outlet opening 13 and may be supported in such relation by the pipes 11 and 14.

The radiator 10 is provided with a central partition 15 that extends from the top to a point spaced a short distance from the bottom whereby the smoke and exhaust gases from the furnace are compelled to travel downwardly under such portion in order to escape through the exhaust pipe 14. During this travel ofthe exhaust gases, theheat units that they contain will be largely absorbed by the wall of the radiator 10 for heating the same. Thus the exhaust gases are utilized for heating the radiator 10 and the rear compartment through which the cold air from the dwelling room passes as will later more fully appear.

The box like offset 3 has a filter 16 extending diagonally across the upper inner corner and con nects with a wall member 17 rising from the base 2d of the casing.

When the furnace is in use the hot air for heating purposes will pass through the pipe 8 to the dwelling rooms or place to be heated while the cold air therefrom will enter the casing through the pipe 9 and pass down around the radiator 10 which heats the compartment and the cold air passing therethrough. The suction of the fan will draw this pre-heated air through it and discharge the same through the passage 5 into the furnace compartment where it may be further heated before it passes through the pipe 8 to return to the dwelling rooms or places to be heated.

I During the summer, the apparatus may be used for cooling a dwelling by starting the fan, the furnace of course, being idle, and circulating the air through the cellar or basement which is usually cool. It is also possible to put ice or some cooling agent in the furnace or fan chamber to increase the cooling effect.

I am aware that many changes may be made and numerous details of construction may be varied through a wide range without departing from the principles of this invention, and I, therefore, do not purpose limiting the patent granted hereon otherwise than necessitated by the prior art.

I claim as my invention:

1. In a hot air heating system, a casing, a partition dividing said casing into two chambers, one chamber forming an air intake chamber and the other forming a hot air delivery chamber, a furnace located in the hot air chamber, a radiator in the air intake chamber spaced from the walls thereof, an exhaust pipe extending from said furnace through said partition and into said radiator, an exhaust pipe extending from said radiator, an auxiliary casing attached to said casing exteriorly thereof and communicating with said air intake chamber, a fan in said auxiliary casing for drawing air into said'air intake chamber, and a passage from said fan to said hot air chamber.

2. In a hot air heating system, a casing, a partition dividing said casing into two compartments, one compartment forming an air intake compartment and the other forming a hot air supply compartment, a furnace in the hot air compartment, a radiator in the other compartment, an exhaust pipe connecting said furnace and radiator, an

outlet exhaust pipe extending from said radiator, means within said radiator for causing the exhaust to follow a downward and upward move ment from said exhaust pipe to said outlet exhaust pipe, an auxiliary casing attached to the wall of said air intake chamber exteriorly thereof to provide an auxiliary chamber, said wall having an opening communicating with said auxiliary chamber, a fan located in said auxiliary chamber for drawing air into said air intake chamber and discharging the same into said hot air chamber, there being a passage between said auxiliary chamber and said hot air chamber.

3. In a hot air heating system, a casing, a partition dividing said casing into two compartments, one forming an air intake chamber and the other forming a hot air supply chamber, a radiator in said air intake chamber and spaced from the walls thereof to provide for the free flow of air therearound, a furnace in the hot air chamber, an exhaust pipe connecting said furnace and radiator and extending through said partition, means within said radiator for causing a tortuous flow of the exhaust gases from the furnace, an outlet exhaust pipe extending from said radiator, an auxiliary casing attached to the wall of said air intake chamber exteriorly thereof and communicating therewith, there being a passage extending from the chamber formed by said auxiliary casing to said hot air supply chamber, and a fan within said auxiliary casing for drawing air into said air intake chamber and discharging the same to said hot air chamber.

EDWARD J. SCHIMKE. 

